import java.util.*;


public class code1 {
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     *
     * @param nums int整型一维数组
     * @return int整型
     */
    public int findPeakElement (int[] nums) {
        int n = nums.length;
        int left = 0;
        int right = n-1;
        while(left<right) {
            int mid = (right-left)/2 +left;
            //上坡
            if(nums[mid]<nums[mid+1]) {
                left = mid+1;
            } else if(nums[mid]>nums[mid+1]) {
                //下坡
                right = mid;
            }
        }
        return left;
    }
}